CAJ | 학술논문

制糖工艺过程出现的葡聚糖主要为α-葡聚糖，它的存在会使糖汁糖分损失，糖液粘度增大，糖液过滤性降低，晶体伸长，这不但增加精炼成本，同时也严重影响产品品质。糖浆澄清仅能除去约20％的α-葡聚糖，而利用α-葡聚糖酶水解α-葡聚糖是一种理想的方法。本文综述α-葡聚糖酶及其在国内制炼糖厂的应用研究进展，并对该研究领域进行展望。基因工程技术和蛋白质定向进化技术在提高α-葡聚糖酶酶活、热稳定性、增强底物特异性等方面发挥着重要作用，将成为今后的研究热点。
제당공예과정출현적포취당주요위α-포취당，타적존재회사당즙당분손실，당액점도증대，당액과려성강저，정체신장，저불단증가정련성본，동시야엄중영향산품품질。당장징청부능제거약20％적α-포취당，이이용α-포취당매수해α-포취당시일충이상적방법。본문종술α-포취당매급기재국내제련당엄적응용연구진전，병대해연구영역진행전망。기인공정기술화단백질정향진화기술재제고α-포취당매매활、열은정성、증강저물특이성등방면발휘착중요작용，장성위금후적연구열점。
α-Dextran is one of the glucans which causes marked harmful impact on sugar produc-tion.The presence of dextran in sugar j uice will lead to severe sugar loss,increased viscosity of the sugar flow,reduced filter syrup,elongated crystals,expensive yield loss,and declined quality of sugar.Syrup clarification could only remove about 20% of theα-dextran.Use dextranase to hydrolyzeα-dextran is an ideal method.This paper reviewed the developments status ofα-dex-tranase and its application research in domestic sugar industry,and prospected the future pic-ture of this field.Gene engineering and protein directed evolution techniques will play an impor-tant role in improvingα-dextranase activity,thermal stability and substrate specificity,and be-come the research hotspot in the future.